1900.] MUS STLVATICUS AND ITS ALLIES. 391 



remote date than that between the British Islands and the 

 Continent, and, moreover, we do not know whether this Mouse 

 occurs on the Faroes or not. Its occurrence in these intermediate 

 localities would afford support to the presumption that it is native 

 in Iceland; but I am indebted to Col. H. W. Feilden for the 

 information that the existence of an indigenous mammal of any 

 kind on the Faroes is very unlikely, since they have undergone 

 an intense, although local, glaciation at a period long subsequent 

 to their present condition as islands. 



At all event?, Mus sylvaticus is perhaps the species par excellence 

 of all others inhabiting the Palsearctic Region which we should 

 most expect to find in such an out-of-the-way island as Iceland. 



Material examined. — The following is a summary of the material 

 which I have been able to examine. Not only have I had 

 before me the specimens included in my own collection, but the 

 whole of those now in the British Museum have been generously 

 placed at my disposal by the authorities. In addition to these 

 Mr. G-errit S. Miller, Junior, Assistant Curator of Mammals at 

 the United States National Museum, Washington, D.C., has most 

 kindly sent over for my examination 66 examples from the col- 

 lection in that museum. I have thus had before me a series of, 

 in all, about 580 specimens, many of them prepared in the best 

 modern methods and having also attached to them carefully cleaned 

 skulls. 



From England and Wales I have seen 171 specimens 1 : from 

 Bedfordshire 2, Cambridgeshire 3, Carmarthenshire 6, Cheshire 9, 

 Dorset 1, Glamorganshire 11, Gloucestershire 6, Herefordshire 

 33, Hertfordshire 3, Isle of Wight 8, Kent 4, Leicestershire 1.3, 

 Lincolnshire 2, London District 13, Merionethshire 5, the New 

 Forest 5, Northants 2, Northumberland 6, Oxfordshire 18, Staf- 

 fordshire 3, Suffolk 4, Surrey 5, Sussex 5, Warwickshire 2, 

 Worcestershire 1, Yorkshire 1 . 



Turning to Scotland and its Islands, I have seen 56 specimens : 

 from Cromarty 11, Edinburgh 2, Elgin 17, Haddingtonshire 2, 

 Lanarkshire 1, and Skye 1 ; while Mr. Robert Henderson of 

 Dunrossness, Shetland, has sent me 8 obtained there; and Mr. W. 

 E. de Winton has kindly placed at my disposal his fine series of 

 14 from the Islands of Lewis and Barra. 



From Ireland I have had before me about 45 specimens : 

 from Carlow 7, Clare 2, Galvvay 4, Kerry 6, Tipperary 3, and 

 Wexford several ; and have also, through the kindness of my 

 friend Dr. R. F. Scharff, been permitted to examine those in the 

 Dublin Museum of Science and Art, among which are included 



1 For these the British Museum and myself are indebted to a numerous 

 band of collectors, of whom I may mention Messrs. O. V. Aplin, A. S. Austen, 

 E. W. H. Blagg, J. L. Bonhote, G. H. Caton Haigh, T. A. Coward, E. J. 

 Cuninghame, G. Denoon, W. Dodson, J. S. Elliott, W. Evans, 0. H. B. Grant, 

 S. F. Harmer, F. W. Headley, the late Lord Lilford, Messrs. J. 0. Mansel- 

 Pleydell, W. R. Ogilvie Grant, Oldfield Thomas, Miss D. Sharpe, Mr. W. Taylor, 

 Col. J. W. Yerbury, while, last but not least, my friend Mr. W. E. de Winton 

 has placed his whole collection from various localities at my entire disposal. 



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